When dealing with GPS mapping for Etrex GPS receivers, there are a variety of things that you need to keep in mind.
In order to get the most benefit from the maps, you will want to use the Garmin map program in order to establish routes you take often and have them already loaded into your system.
While this does not help you if you need to input a new destination, it does allow you to easily access information when you are already on a route in your Etrex system. There are, however, a few things that you need to do in order to enjoy the full potential of GPS mapping for GPS devices.
First, you need to get the most modern map sources possible. This can be done by either going through the Garmin International website and downloading the maps from them, or by purchasing maps on cds from a variety of different independent vendors.
The maps provided by Garmin International tend to be more modern than the cd maps, while the maps on cds cover more localized regions and additional areas. The type of maps you go with should be dependent on how you intend on using your Etrex device.
If you need it for more city based and suburbian areas, the Garmin maps will probably have everything that you need in order to get where you are going without difficulties. After you have created your routes and downloaded your maps, transferring the data to your Etrex device is all you need to do to make use of the maps and routes.